Halogen-free scaling powder

Abstract

The invention relates to a soldering flux for welding in the electronic industry, in particular to a no-clean and halogen-free soldering flux. The soldering flux consists of organic solvent, abietic resin and derivate of the abietic resin, synthetic resin surface active agent, organic acid activated agent, anticorrosive agent, latent solvent and film forming agent. The soldering flux has the advantages of transparency, no environmental pollution, no penetrating odor, little smoke fume, shining welding spot, strong wetting power, excellent weldability, few residues left on the plate surface after welding, clean plate surface, low ionic contamination, unnecessary cleaning after welding and high surface insulation resistance, and conforms the environmental protection requirements, meets the no-clean requirement of a printing component plate and has stronger market competitiveness.

Description

Technical field: [0001] The invention relates to a flux used for welding in the electronic industry, in particular to a no-cleaning, halogen-free flux. Background technique: [0002] Flux is usually a mixture of rosin as the main component, which is an auxiliary material to ensure the smooth progress of the soldering process. Welding is the main process in electronic assembly. Flux is an auxiliary material used in welding. The main function of flux is to remove the oxides on the surface of the solder and the base material to be welded, so that the metal surface can reach the necessary cleanliness. It prevents re-oxidation of the surface during soldering, reduces the surface tension of the solder, and improves soldering performance. The quality of flux performance directly affects the quality of electronic products. [0003] In recent decades, in the soldering process of electronic products, rosin resin flux mainly composed of rosin, resin, halide-containing active agent, a...

AI Technical Summary

Problems solved by technology

The flux is corrosive to electronic components and directly affects the quality of electronic products. During soldering, because rosin volatilizes at high temperature, the smell is very strong, which affects the health of operators. Rosin residue is left on the surface, and it needs to be cleaned, which increases the process

Someone once invented NCF no-cleaning flux, but because it contains camphor in its components, the smell is very strong during welding, and there are still traces of flux after welding. High, the sales price is expensive, so that this kind of flux cannot be widely used